NIRS Determination of Calcium and Magnesium in Cigarette Paper

A mathematical prediction model for FT-NIRS determination of Ca and Mg in cigarette paper was established by using the algorithm of PLS.As shown by the experimental results,values of correlation coefficients of the models for Ca and Mg found were 0.987 0 and 0.985 1 respectively,and values of root of mean square errors of cross validation (RMSECV) found were 0.462 (for Ca) and 0.008 2 (for Mg).Values of average relative deviation between the predicted values by FT-NIRS and the determined values found by FAAS for Ca and Mg were 3.1% and 7.4% respectively.It was found that the proposed method was non-destructive to sample and feasible to be used for rapid analysis of lots of samples.